63000 acres is about 98 square miles, so about a 10 mile by 10 mile area. Pretty sure this isn't 'destroying wildlife' levels of destruction, but yes, definitely ecosystem influencing. Compared to current alternatives (gas/coal/hydro), this may have less impact overall. Nuclear power should be invested in, but may take more time.
Come on now, Nevada is only 110,000 square miles. This solar planet would have taken up 0.089% of the state. All for a power plant that would have to be torn up in as little as 25 years.